2007-07-23 06:26:13 · 7 answers · asked by marie c 1 in Science & Mathematics ➔ Mathematics
i assume the sides are 4 root(5) and 3+ 2root(5)
just multiply and divide by 2
=[12 root(5) + 8 root(5).root(5)]/
2007-07-23 10:34:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I think I`ve worked out the question---now for the answer!
Area = (4√5) (3 + 2√5) cm²
Area = 12√5 + 8 x 5 cm²
Area = 12√5 + 40 cm²
2007-07-23 08:11:36 · answer #2 · answered by Como 7 · 0⤊ 1⤋
Just multiply it out -
(4 - /5) * (3 + 2/5) = 12 + 8/5 - 3/5 - 2x5
= 2 + 5/5
If the question is stated in surds, then leave the answer in this form - that's right, step away from the calculator, easy now, sir.
2007-07-26 03:54:17 · answer #3 · answered by Anonymous · 0⤊ 0⤋
easy! For the fringe, you may function up all 4 factors. 2 lengths of four a million/2 yards, 2 widths of three yards: 4 a million/2 + 4 a million/2 + 3 + 3 = 15 For the section, use the formulation for a rectangle, section = length x top: 4 a million/2 x 3 = 13 a million/2
2016-11-10 04:30:49 · answer #4 · answered by Anonymous · 0⤊ 0⤋
multiply them. 4/5 x (3+ 2/5)= 12/5 + 10/25 = 12/5 + 50
2007-07-25 00:44:06 · answer #5 · answered by halid_16 1 · 0⤊ 0⤋
I've got a good degree in maths but the question is "Greek" to me.
I do wish the "words" would either not change or be explained.
2007-07-23 06:34:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋
just multiply them directly,I think the resuld should be 2-5/5(according to your symbols)
2007-07-23 06:41:05 · answer #7 · answered by Newlenston 2 · 0⤊ 0⤋